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Entropy 2015, 17(4), 2355-2366; doi:10.3390/e17042355

A Criterion for Topological Close-Packed Phase Formation in High Entropy Alloys

1,2,†
,
1,†
,
1
,
1,* , 1,3
and
4,*
1
School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
2
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
3
Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian 116024, China
4
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Kevin H. Knuth
Received: 19 January 2015 / Revised: 10 April 2015 / Accepted: 15 April 2015 / Published: 20 April 2015
View Full-Text   |   Download PDF [1280 KB, uploaded 20 April 2015]   |  

Abstract

The stability of topological close-packed (TCP) phases were found to be well related to the average value of the d-orbital energy level \( \overline{Md} \) for most reported high entropy alloys (HEAs). Excluding some HEAs that contain high levels of the elements aluminum and vanadium, the results of this study indicated that the TCP phases form at \( \overline{Md} \) > 1.09. This criterion, as a semi-empirical method, can play a key role in designing and preparing HEAs with high amounts of transitional elements. View Full-Text
Keywords: high entropy alloys; TCP phases; d-orbital energy level; alloy design high entropy alloys; TCP phases; d-orbital energy level; alloy design
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lu, Y.; Dong, Y.; Jiang, L.; Wang, T.; Li, T.; Zhang, Y. A Criterion for Topological Close-Packed Phase Formation in High Entropy Alloys. Entropy 2015, 17, 2355-2366.

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